Combined telegraph relay and sounder.



A. H. MEYER.

COMBINED TELEGRAPH RELAY AND SOUNDER.

APPLIOATION FILED SEPT. 19, 1907.

909,198, Patented Jan. 12, 1909.

3141mm toe b1 ewes To all whom it may concern:-

uni-ran STA'llES PATENT omen i ALFRED J. MEYER, OIf MILWAUKEE, WISKJONSIN.

CQIWINED TELEGRAPH RELAY AND SOUNDER.

Specification of Letters Patent.

Application flied September 19, 1907. Serial No. 398,642. g I

tery or an ordinary sounder previously used for such purpose is dispensed with.

v The construction of my device is explained by reference to the accompanying drawings in which,

Figure 1 is a rear view,,and Fig. 2 an end vlew of an ordinary relay instrument provided with my sound increasing device, the

sounding drum being shown in section to disclose the interior construction. Fig. 3

. represents a modified form of my sounding apparatus removed from the relay instrument.

Like parts are identified by the same reference characters throughout the several views.

The relay instrument comprising the electro magnets 2, supporting base 3, supporting post 4, adjusting screw 5, clamping nut 6, armature 7, armature actuating spring 8, spring supporting screw 9, clamping nut 10,

.: and adjustable horizontal bar 11 are all substantially of ordinary construction and need not be herein more -fully described.

My invention pertains more especially, as previously stated, to the means employed for increasing the volume of sound which is produced by the vibratory movement of the armature consisting in the drum 12 which is rigidly supported above the armature from the upper side of the electro magnets 2. The adjustable contact bearing screws 13, 13, and the armature 14 which extends upwardly from the center of the armature? and contact head or hammer 15, which is adapted as the armature vibrates toward and from the electro magnets tobc brought in contact with the opposing ends of said ad justable screws 13, when owing to the vibration of the drum the sound (produced by such contact is greatly increase The drum 12 comprises the annular peas shown in. Figs. 1 and 2.

ri-phery 16 and the opposing heads 17, 17 An aperture 18 is formed through the lower side of the drum for the reception of thevibratory arm 14. While the drum thus formed will greatly increase the sound, I preferably employ in connection therewith a sounding horn 18, the converging ends of which are inserted through the aperture 20 in the side of the drum, whereby the sound produced within the drum may be thrown in the direction of the operator to whom the message is sent. 4

While 1 preferably employ a single arm in connection with a sounding drum and operate the same centrally within such drum as, shown in Fig. 1, if desired a bifurcated arm 22 may be substituted therefor. The arm Patented Jan. 12, 1909.

22 extends upwardly upon the exterior sides of the drum and is provided with adjustable contact bearing screws 24, 24, which are adapted as said armature vibrates, to contact with the heads of the drum upon their exterior surfaces as shown in Fig. 3, the other parts of the device are madesubstantially It will be understood that the stroke of the vibratory arm may be increased, if desired, by turning back the contact bearing screws or diminished by turning such screws in the opposite direction whereby the sound of the stroke will be inrequire.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is,

1. Thecombina'tion with. a telegraph relay instrument of a closed sounding drum having integrally formed periphery and creased or diminished as circumstances may heads, a sounding horn connected with the periphery of said -drum, a vibratory arm provided with contact bearings connected with the armature oisaid relay instrument and adapted to alternately communicate a vibratory movement to the respective heads of said drum with. each vibratory movement arm provided with. contact bearings connect ed with the armature of said relay 'instru merit and extendinginto the interior'of said drum, adjustable means for limiting the vibratory movement'of said vibratory arm,

said bearings being adapted to alternately 11b communicate a vibratory movement to the i arm being;v adapted to alternately contact respective heads of said drum with each vi- 1 bratory movement of said armature.

3. The combination with a telegraph relay instrument of a sounding drum, a horn connected With the eriphery'of said drum, adjustable contact earings centrally supported from the heads of said drum and a vibratory arm provided With contact bearings connected with the armature of said relay instrument, the bearings of said vibratory with the adjustable contact h earmgs sup ported by said heads With each vibratory movement of said armature, all substan- 15 tially as and for the purpose specified.

In testimony whereof I aflix my signature in the presence of two Witnesses.

ALFRED J. MEYER. Vitnesscs Ms. B. ERWIN, O. R. ERWIN. 

